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K000161021: NGINX ngx_http_ssl_module vulnerability CVE-2026-40701

🗓️ 13 May 2026 12:27:19Reported by f5Type 
f5
 f5🔗 my.f5.com👁 7 Views

NGINX ssl_module CVE-2026-40701 allows attackers to modify data or restart heap-use-after-free.

Related
Detection
ReporterTitlePublishedViews
Family
FreeBSD		nginx-devel -- multiple vulnerabilities
13 May 202600:00
–freebsd
FreeBSD		www/nginx -- Remote Code Execution/DoS
14 May 202600:00
–freebsd
Tenable Nessus		Amazon Linux 2023 : nginx, nginx-all-modules, nginx-core (ALAS2023-2026-1714)
27 May 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : nginx, --advisory ALAS2NGINX1-2026-012 (ALASNGINX1-2026-012)
27 May 202600:00
–nessus
Tenable Nessus		Debian dla-4589 : libnginx-mod-http-auth-pam - security update
18 May 202600:00
–nessus
Tenable Nessus		Debian dsa-6278 : libnginx-mod-http-geoip - security update
16 May 202600:00
–nessus
Tenable Nessus		Fedora 44 : nginx / nginx-mod-brotli / nginx-mod-fancyindex / etc (2026-094eb13bb1)
15 May 202600:00
–nessus
Tenable Nessus		Fedora 42 : nginx / nginx-mod-brotli / nginx-mod-fancyindex / etc (2026-38623b4fed)
15 May 202600:00
–nessus
Tenable Nessus		Fedora 43 : nginx / nginx-mod-brotli / nginx-mod-fancyindex / etc (2026-fb53cb4d67)
15 May 202600:00
–nessus
Tenable Nessus		FreeBSD : nginx-devel -- multiple vulnerabilities (1ed77d8e-53bb-11f1-b339-3497f65b111b)
20 May 202600:00
–nessus
Rows per page
Vulners
Node
f5nginx_plusRangeR32–R36
OR
f5nginx_open_sourceRange1.19.0–1.30.0
OR
f5nginx_instance_managerRange2.16.0–2.22.0
OR
f5wafRange5.9.0–5.12.1nginx
OR
f5nginx_app_protect_wafRange5.1.0–5.8.0
OR
f5nginx_app_protect_wafRange4.9.0–4.16.0
OR
f5dosRange4.8.0–4.9.0nginx
OR
f5nginx_app_protect_dosRange4.3.0–4.7.0
OR
f5nginx_gateway_fabricRange2.0.0–2.6.0
OR
f5nginx_gateway_fabricRange1.3.0–1.6.2
OR
f5nginx_ingress_controllerRange5.0.0–5.4.2
OR
f5nginx_ingress_controllerRange4.0.0–4.0.1
OR
f5nginx_ingress_controllerRange3.5.0–3.7.2

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15 May 2026 17:45Current
6Medium risk
Vulners AI Score6
CVSS 3.14.8
CVSS 46.3
EPSS0.00044
SSVC
nginxssl moduleuse after freedata modificationworker restartvulnerability 2026 40701
7